Jack Paar was an American entertainer and television host best known for his work on the late-night talk show The Tonight Show Starring Jack Paar. He was a pioneer in the genre of late-night television, hosting the show from 1957 to 1962. Paar was known for his wit and humor, often making jokes about current events and celebrities. He was also known for his controversial monologues, which often pushed the boundaries of acceptable content for television. Paar's influence on late-night television is still felt today, as many of the conventions he established are still used by modern hosts.